10 Biggest Unsolved ‘Pokémon’ Mysteries, Ranked

Published Oct 2, 2026, 7:29 PM EDT Born with Autism (formerly classified as Asperger syndrome), Tyler B. Searle has been obsessed with storytelling since he was old enough to speak. He gravitated towards fairy tales, mythology, the fantasy genre, and animated movies and shows aimed at family audiences. When not writing, Tyler enjoys watching more cartoons and reading fantasy books in his home in Ontario, Canada. In 1996, Nintendo released Pokémon Red and Green for theGame Boy in Japan. The games were a massive hit, and the international release of Pokémon Red and Blue in 1998 helped turn the franchise into a global sensation. Now celebrating its 30th anniversary in 2026, Pokémon still maintains a strong presence in popular culture thanks to numerous television series and specials, a long-running manga series, trading cards, a highly publicized competitive scene for video games, and a plethora of merchandise. Across its 30-year history, Pokémon has presented many mysteries for fans to chew on. Most get answered one way or another, such as in future video games or story arcs of the anime. However, there are a fair few that remain unresolved, only partially explained, or open to interpretation, giving fans plenty to speculate about. 10 Who Is Lumiose City’s Ghost Girl Searching For? A Suspicious Spook Haunting Kalos and Hoenn Image via The Pokémon Company Generation VI left fans with plenty of unanswered questions. While Kalos had a plethora of memorable Pokémon, and Mega Evolution switched up the competitive scene, Pokémon X and Y never received an enhanced third version. Generation VII arrived in 2016, the franchise's 20th anniversary year, leaving mysteries such as the locked power plant doors behind. The 2025 release of Pokémon Legends: Z-A finally returned players to Lumiose City, but one of its strangest residents remains an enigma: the ghost girl who appears after the player exits an elevator in X and Y. The ghost glides around the player, declares that they are "not the one," then vanishes. In Pokémon Omega Ruby and Alpha Sapphire, a Hex Maniac on Mt. Pyre repeats a similar statement, though whether she is connected to the Lumiose apparition is unclear. Legends: Z-A adds references to the haunting through NPC dialogue, including a story about a girl appearing in taxis. Even after the return to Kalos, the ghost girl's identity and the person she is searching for remain unexplained. 9 How Are Pokémon Eggs Made? Nobody Knows How It Got There Many Pokémon games feature a Day Care or Nursery, where players can leave compatible Pokémon. Generally, two Pokémon of opposite genders that share an Egg Group can produce an Egg that hatches into the female's species, while Ditto provides another route for many species. While at first glance it seems pretty obvious that the Pokémon are reproducing behind the caretaker's back, the games remain coy about exactly how Eggs appear. A little girl in Sinnoh says that nobody has ever seen a Pokémon lay an egg, which matches up with the caretaker's surprise. A man in Kalos also says that Pokémon Eggs are less like eggs and more like cradles, adding another strange detail to the process. Pokémon Scarlet and Violet move the mechanic to picnics, where Eggs can appear in a basket when compatible Pokémon are in the player's party. The setting changes, but players still never see how the Eggs are produced, leaving the biological details to the imagination. 8 What Did Unova’s Original Dragon Look Like? A Truly Legendary Beast Shrouded in Mystery Image via The Pokémon Company In the history of the Unova region, two brothers united the land with the help of a powerful Legendary Dragon-type Pokémon. However, the brothers became divided, with the elder brother believing in truth while the younger sought ideals. According to Unova's legends, their disagreement caused the dragon to split into Reshiram, who sided with the elder brother, and Zekrom, who sided with the younger. Kyurem is described as the empty shell left behind. Given the radically different designs of each dragon, one has to wonder what the original dragon looked like, not to mention how powerful it was. Pokémon Black 2 and White 2 give fans a potential clue with the DNA Splicers, which allow Kyurem to absorb Reshiram or Zekrom and transform into White Kyurem and Black Kyurem, respectively. Not only does Kyurem receive higher base stats than Reshiram or Zekrom, but it also gains access to some of their unique moves. These combinations offer a glimpse of their shared power, but neither reunites all three into the original dragon. 7 What Were Tobias’ Other Four Pokémon? An Obstacle to Keep Ash From Victory Image via the Pokémon Company Ash's Sinnoh team was one of the best in his career as a trainer, and after his battle with his Sinnoh rival, Paul, it looked like Ash had a good chance to win the league. However, his next opponent was Tobias, a mysterious trainer who came out of nowhere and was sweeping his opponents using only the Mythical Pokémon Darkrai. It took half of Ash's team to take down Darkrai, but all hope of victory was soon dashed when Tobias sent out his second Pokémon, Latios, who defeated the rest of his team and tied with Pikachu. Tobias remains one of the anime's most mysterious and controversial figures. The fact that he just shows up, never reveals his backstory, and sweeps the league with a Darkrai makes him feel like an obligatory stronger trainer for Ash to lose to. Ash eventually earned major victories elsewhere, but that doesn't make Tobias' sudden arrival any less frustrating. Fans of the anime also wonder about Tobias' four remaining Pokémon and whether they were also Legendary or Mythical Pokémon. 6 Does Pokémon Take Place in Our World? Inspiration or Something More? Image via The Pokémon Company Each region of the Pokémon world draws heavy inspiration from real-world locations. They do a good job of preventing the regions from feeling like a simple copy and paste of reality, thanks to the inherent fantastical elements that come from Pokémon. However, the series often makes reference to real-world places and things, particularly during the early games. Both the anime and the games reference non-Pokémon animals, such as Raichu's early Pokédex entries, which mention that it could fell an Indian elephant with its electricity. Then there are things like the journals found in the Pokémon Mansion, which place Mew's discovery in Guyana. Later entries replace some of those references with Pokémon equivalents: Raichu's Legends: Arceus entry, for example, describes its ability to knock out a Copperajah. These changes leave fans wondering how literally to take the franchise's early connections to Earth, rather than establishing that the Pokémon world is a future version of our own. 5 What War Did Lt. Surge Fight In? A Bloody History Lost to Time Image via The Pokémon Company For the most part, the Pokémon world is an idealistic one, where humans and Pokémon work together to build better societies. That's not to say it doesn't have its moments of conflict. Aside from the evil teams trying to take over Legendary Pokémon and use their powers for nefarious ends, the Kalos region went to war with an unknown foe 3,000 years ago, leading AZ to create the ultimate weapon. Other wars have been hinted at over the years, but one of the most mysterious is the conflict Lt. Surge mentions in the original games. The Electric-type Gym Leader says that his Pokémon helped him survive a war, but provides little context about the conflict itself. Kanto remakes such as Pokémon FireRed and LeafGreen and Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! do not turn that reference into a detailed history. Who fought, what caused the conflict, and how it affected Kanto remain fertile ground for fan theories, including the unconfirmed idea that it explains the region's relative lack of adult male characters. 4 What Happened Between Brock and Professor Ivy? Just Her Name Causes Him to Shut Down Image via The Pokémon Company Early into Ash's adventures in the Orange Islands, he, Misty, and Brock met Professor Ivy to recover an item called the GS Ball that, for some reason, couldn't be transported to Professor Oak. Smitten by Ivy's beauty and horrified at how poorly she and her three assistants maintain their living quarters, Brock opts to stay behind, and his role as traveling companion is filled by Tracey. However, when the group returned to Pallet Town, they found Brock was there to greet them. When asked about Professor Ivy, Brock would instantly shut down, curl into a ball, and weakly ask not to say her name. Thus, neither the characters nor the audience learn what happened during Brock's stay with Ivy, let alone what caused him to return to Kanto. Brock is no stranger to being rejected by women, but his unusually dramatic reaction turns this running gag into one of the anime's most memorable unanswered questions. 3 What Is Up With the GS Ball? Does Kurt Still Have It? Image via The Pokémon Company This mysterious golden Poké Ball was found by Professor Ivy, but try as she might, she couldn't get it to open. It also couldn't be teleported, so Ash and his friends had to physically collect it and bring it to Professor Oak. He then asked them to deliver the GS Ball to Kurt, a man who could create Poké Balls from Apricorns, to see what he could make of it. Once the GS Ball is handed over to Kurt, it vanishes from the narrative despite Ash carrying it through two regions. The abandoned storyline has a behind-the-scenes explanation: the original plan was for the GS Ball to contain Celebi, but the Mythical Pokémon was chosen to star in Pokémon 4Ever, and the planned arc was dropped. That explains why the story disappeared, but leaves its in-universe outcome unresolved. After dozens of episodes of buildup, fans never got to see Kurt open the ball or discover what it contained. 2 Who Is Ash's Father? And Why Isn't He Around? Image via The Pokémon Company Just like most of the games' protagonists, Ash Ketchum lives with his mother and has a friendly relationship with his local Pokémon Professor. His father, however, never receives an on-screen introduction. Early references establish that he is a Pokémon trainer, but the series gives viewers little concrete information about his identity or whereabouts. Naturally, the lack of information regarding Ash's father has led fans down very deep rabbit holes with rather bizarre results. Some believe that his father could be an established character, such as Giovanni, the boss of Team Rocket, or Silver, a one-off character from Hoenn who had an unusual reaction to hearing Ash's name. These remain fan theories. The alternate-continuity special The Distant Blue Sky! even teases a meeting with Ash's father, only for Ash to arrive after he has left. With Ash's run as the main anime's protagonist ending in 2023, his father's identity remains one of the franchise's most conspicuous missing pieces. 1 How Do Poké Balls Work? There's More to It Than Shrinking Pokémon Image via The Pokémon Company To catch and train Pokémon, trainers use Poké Balls, mysterious items that can capture wild Pokémon and provide a portable home for their partners. Apricorns have long been used to make certain Poké Balls, and the franchise features dozens of varieties that specialize in different catching conditions. Despite their importance, the details of how these devices operate are only partially explained. Pokémon Legends: Arceus does answer one major question: Professor Laventon explains that Pokémon can shrink themselves, and Poké Balls take advantage of that ability to contain them. The remaining mystery is how that process connects to the franchise's more advanced technology, including storing Pokémon in PCs and transferring them electronically. Luxury Balls are described as especially comfortable, but the series rarely gives a consistent, detailed look at what Pokémon experience inside their balls or how those interiors differ. Thirty years into the franchise, even its most recognizable invention still leaves room for questions. Pokémon Release Date 1997 - 2023-00-00 Network TV Tokyo, TV Osaka, TV Aichi, TVh, TVQ, TSC Cast Rica Matsumoto Satoshi (voice) Ikue Otani Pikachu (voice)